[RKDinOKC]

The fix for your 930 is to have the turbo reworked not the transmission. Get the turbines lightened and rebalanced. It will spool up much quicker, this not only reduces lag, but it widens the power band on the lower end of the rpm range.

The previous owner of my 944 Turbo had replaced the K26/8 with a K27/8 that he had lightened. Even though the K27 is a size bigger, it came on at 3000 rpm like the stock K26 giving it a useable power band from 3500rpm to red line @ 7000rpm at 17psi of boost. That's a 3500rpm power band to work with!