well i had my car on the lift and decided to check my block number and if memory serves me well from what i have read some place that the last 3 numbers should be 329. but when i checked the block it has 290 on it instead. my concern is that if its not correct do i have the correct heads, cam, etc. and does anyone know what car this block came from? or is it correct? where are the casting numbers on the heads and what should they be? any help would be greatly apprecated. thanks