Has anyone here done a 4v head swap on a 2v block? I know it can be done its just a tedious process. I have found some sets of heads cams with timing chain cover on ebay from like 500-1200 $ but they are from older 4v motors like mid 90s would this stuff work. iv looked into a whole 4v block they are way more than a 2v dont feel like spending 6000 on a whole motor with 100,000 miles