I dont see any compelling reason to shy away from a BB setup. However, you may have problems with siamese sleeves like the 324, if you do not know what to do with the steam holes. The proper solution is not to block them off in the block, but drill them in the head (and gasket), unless they are cross drilled in the block like the BOSS302.

There is no reason it can't work reliably, so long as you pay attention to the details. If you think you can just buy a 3.7 bore block, order some 3.7 bore pistons, and you are home free, you should probably stick with a standard displacement motor. You need to have a thorough understanding of what you are engineering if you expect it to work correctly.

The people that have these horror stories are probably a little more 'git 'er done' and a little less Jon Kasse.

Brian
EFI-Unlimited