1991 mitsubishi 3000gt vr-4 3.0l

Car just turned 66,000 original miles, I bought it when it had right at 64,000 just a few months ago. For some reason, out of the blue, car decided to spin a bearing sitting idle at a stop light, which is making a rod knock. Local Nissan dealership hardly found any metal fragments in the oil, so it could possibly be a cheap fix instead of full engine rebuild or replacement.

Car has never been wrecked, I have the CarFax report from when I bought it from the dealership. Car is now just over 30 days outside the warranty the dealership offered.

I have not raced the car, nor driven it rough. New clutch has 100 miles left on the 500 mile break-in period.
Here is a list of the things replaced, the Nissan dealership here in Columbia can verify and I have receipts for most of the work.
61, 333 miles- Changed at purchase dealership OEM Parts
Timing Belt & Tensioners
All Drive Belts
Water Pump
Thermostat
65,000 miles- Most work done by Nissan (*things I installed myself)
*New Interstate Battery
Tranny, Rear Diff, Transfer Case- all with Redline fluid
Coolant (with Redline Water Wetter additive), Clutch, Brake Fluid Flush
x2 Oil Changes with 10w-30 Royal Purple with Royal Purple Oil Filter
All Four OEM Struts, Boots, Bumpers
All Four Drilled/Slotted Rotors with new ceramic pads
*3SX Cold Air Intake Box with K&N Filter
PCV Valve
New Valve Cover Gaskets
New Throttle Body Gaskets
3SX Rear Camber Adjustment Kit
TEIN Lowering Springs (lowered car just over an inch, not shown in pictures)
Stage 2 Spec Clutch
Fuel Filter
NGK Plugs and Magnecor Performance Plug Wires
4 Wheel Alignment
Rear Main Seal
Both Carrier Bearings on the Drive Shaft
Lots of other small fixes
65,000 miles- All work done myself
Custom Black Floor Mats with Logo
3SX Short Throw Shifter with Front and rear stabilizer bushings
OEM Leather Shifter Boot
Rear Speakers Replaced with 6x9 Memphis Speakers (15-MCX692, $200 speakers)
Front Speakers are aftermarket and were replaced before I got the car
Kenwood CD Player (will be replaced with an Alpine if I sell the car)
65,000 miles- Sound Performance shop
CTX Ceramic Llumar Window Tint (Rear & Sides)
Autopage RF-425 Keyless Entry/Alarm with two remotes
Performance Mods:
HKS Turbo Timer
HKS Electronic Boost Controller
Front Pre-Cats have been gutted to allow for more airflow, stock rear cat is still in place
Tires are still in really good shape with plenty of tread left. These cars are known to have the capacitors go bad on the ECU's. The ECU has been checked and all capacitors have been replaced (none were found leaking but had it done anyway). I also have an extra working ECU and extra MAF that will go with the car as these are getting hard to find anymore.
Everything on the car works, factory Aero, Active Exhaust, Active Suspension, speakers, lumbar adjustment on the driver's seat, illumination bulbs, power antenna. There are a couple of internal cosmetic things such as the driver's seat and defroster grills (I have replacement grills but have not installed them yet).