400's are they any good?

I just disassembled my 72 400. the pistons were .100 below the deck and the heads have big open chambers with no quench at all. The head gaskets were thin steel. The pistons are flat with no valve reliefs. Very low compression. I suppose it would be possible if someone wanted to stay low buck to freshen up the stock short block and get heads with smaller chambers. I definately would not blindly order head gaskets and see what you get because of the compression problem. Like I've said before I'm new to Mopars so I'm no expert but did'nt 383s built in the 60's have small chambers? if so those might make a good choice. I also saw on Edelbrocks web site a few months back they had new RPM Xtreme heads with 220cc runners and 80cc chambers so those would help but they kind of push the budget. One other thing worth mentioning is possibly using a flat hyd cam with Rhodes lifters to help out the cylinder pressure at low RPM. They have two styles now, the original ones and a new style called vmax that require adjustable valve train. The vmax ones are adjustable with the amount of lift and duration you can bleed off and they can shorten the duration up to 20 degrees. I know alot of people think/say that the Rhodes are a gimmick but I have used them in a Pontiac and a big block Chevy and both times they worked absolutely exellent. The Chevy was a 9to 1 454 in a 4200 lb car with 3.36 gears and it ran 12.80s