I've always thought that when doing a DET swap that the flywheel from the DE must be used on the DET.
***That is correct. You will need to use a DE flywheel and have the flywheel bolts holes enlarged to accept the larger diameter DET flywheel bolts.
While looking at the jun site, they list one for the fwdDE and one for the DET. What's the difference?
***That's it. There is one for the DE and one for the DET. The one for the DE is lighter and has smaller bolt holes. The one for the DET is heavier, larger, and has larger bolt holes.
If you are planning to install a DET into your USDM B13 or B14, then you should get the FWD flywheel and bore out the flywheel bolt holes.
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Jay Whitely
Tampa, FL
1996 200SX SE-R
GTi-R powered with F-MAX kit