rebuilding question

[NoXferCase]

I have a '90 convertible I got cheap because the motor needed a rebuild. The guy doing the work is Mazda certified. As long as the motor is torn down I'm having him street port it as well.

New apex seals, side seals, etc.

Now the question;

I saw a recommendation on another site to use '93-'95 corner seal springs ("MUCH better than the '86-91 springs")

Before I go ask for these (and probably get charged double), what makes them better? ARE they better?



TIA