So I have been reading everything on this forum, google, etc. and I still can't get a straight answer. From what I read all the S54 info is for the 5SFE variant. I ended up buying an S54 transmission from someone that purchased an engine/tranny combo for an MR2 and the linkage was not correct for their vehicle. The seller stated that it came from a "red top 3SGE" My question is this, will an S54 that was mounted on a Gen 4 3SGE fit a Gen 1 3SGE directly? These are basically the same exact engines no? Does it require a different flywheel, starter, etc.?