Hi Everyone, I’m in deep in a restoration of my 67 Firebird Convertible and would like some opinions. The car originally came with a 326 with a power glide transmission. The motor ran before I started the restoration. The only issue with the original 326 is it has bad compression in 2 cylinders, nothing a good rebuild wouldn’t fix. However, the machine shop I was talking to has a 400 short block (casting #481998) that he could build for me however I wanted for $1000 less than anyone has quoted me for rebuilding the 326. So would I be better off going with the 400 and storing the original 326 & power glide or do I just get the 326 rebuilt. I want a cruiser, but my foot does get heavy a lot. If I do go with the 400 a friend has a Muncie M21 transmission he would sell to me ridiculously cheap. Is that a good transmission for these cars? Thank you for any input you can give. -Chuck Elliott