Have just fitted a Mk2 gearbox to a Eunos J2-Limited 1994 1.8, without needing a Mk2 baffle plate.
It was a customer supplied gearbox and came with different wiring terminals for the reversing light switch etc and an electronic speedo-drive instead of a mechanical cable and the shift turret was a completely different design including the gear-stick. The switches ALL swapped over ok from the old box, the speedo-drives swapped over ok (same number of drive-teeth) and function perfectly, the prop-shaft fitted fine into the `new` box.
You must use the MK2 gear-lever but ALL bell-housing and starter bolts will go back in with the `new` box. There is a metal bracket at the top right position (on the outer starter-motor bolt) which supports the loom running along PPF frame, the 90 degree bend of this bracket needs to be flattened out a bit to get that bolt back in
Eunos R2 Limited Supercharged 1.8 `White Lightning`also a Eunos J2 Limited 1.8 very low milage.
Ex-`Member of The Glorious Green Gang
Organiser of annual `Nurburgring on a Budget` trip for MX5/Eunos only.
Any work you do to your car is entirely your own responsibility. If in doubt, you should check technical advice with an independent , qualified person who has seen your car. Dr. Eunos of the MX5OC accepts no responsibility for any damage caused to your person or property as a result of you following or not following any advice offered on this forum.