Here they are side by side.The 5 sp from the 88 1.3 soft top and the 4 sp from 84 1.0 lwb.The overall length looks very close.
The gear shifter positions are a little different,no big issue.The gear box x member mount on the 4sp looks like if inverted might mount on the 5sp mount backwards.Or i will have to make something up.
How much of this vacuum crap is needed on the older zook?I am also tempted to change the carb and manifold to an 84 model.
