So what you're saying is, you have these below, but you're not getting good rear bushings for them?
And you wanna know if you could convert to these?
Honestly, I have the 2nd type (older, local AE101) and getting those rear bushings is a pain in the ass, but your newer ones are much easier to get. Thankfully, last time I got them was maybe 3yrs ago from TTTL and they're still going strong. I wouldn't advise that you convert to the older type.
You can probably look for a part number and give TTTL a call OR try to source a polyurethane replacement online.
I'll have you know though, any oil leaks that seep down the undercarriage to the bushings WILL ruin the rubber in a very short time. Make sure that there is no oil damage to your rubber suspension components in case that's the reason you keep having to replace them often.
If you're ordering the poly set, go to
http://www.tein.com/products/superpro.htmlthen click on
"SuperPro On-Line Vehicle Search Catalog"
This will come up.
http://203.31.191.243/fulcrumCat/find your car and part #
your cradles are the '96-'98 model, so the poly part number for the rear busing is
SPF1900Kolder 93-95 (horizontal) rear bushings: SPF2298KThe front bushings are standard and the p/n is
SPF0996K