904 differences

Sears sells a seal puller for yanking seals but if your careful you can use a large straight blade screwdriver. Just stick it in behind the seal at an angle and pop it out. Done it may times that way myself. If you have a wobble extension you might try that with a shallow socket on the top starter bolt. That's what I use on mine that works. I thought there were only 2 flexplates for LA small blocks. Dealers are notoriously expensive for parts. May want to check Summit or JEGS or E-bay. Or put a want ad here. Are you using a converter with 7/16" bolts? Factory size and most aftermarket converters use 5/16" bolts. When you step up into more higher perf. converters you see the 7/16" bolts.