my 16 year old recently purchased a 500 caddy machined block. he got it for $75.00. he then brought the matching heads for $125.00. he wants to do a mild build and drop it into my monte. he has gotten a job at subway to pay for the build but i am thinking that the monte will be setting idle for a very long time before he can get all the money together. right now he and i have purchased a 88 z28 and are putting my 350/350 in it out of the monte.