The best I can figure, the year is 1988, originally a TBI, 454ci, MkIV block, supposedly out of a truck but I havent been able to match the code on the block.

The casting # is 14015445 which I believe is truck or car, it is a 4-bolt block, came with 14092360 peanut heads. Damper on there now (the bad one) is the original and is pretty huge IMO. Motor is externally balanced

Mostly a street motor now, remaining below 5500rpm, so I dont need/want anything extravagent. Any suitable sub will do unless it's a total pos.

Thanks.