Any one looking at getting a modified 355 or 454s start looking around racing web sites and the local tracks. Every track in the south east is starting to use the Chevy crate motor, Its sealed from the factory and makes racing cheaper to get into. So all the race engines that have all the Good parts in them will start hitting the for sale block because they can not use to on the track. I have seen so far a 355 built with all the nice stuff that cost over 5500 sell for 800 bucks. All you would have to do is change the cam and maybe the pistons if you dont want a 10.1 engine. This is with a high performance ignition intake everything but carb.