I think there are some good options for upgrading the ECM for an 86 Buick Grand National (Turbo 3.8 V6 EFI). Here is what I'm thinking:

1. 7727 / 7730 $8F - 3.1 V6 Turbo

2. 16183247 $5B - 3.8 V6 Supercharged

It's a 12 second 1/4 mile car now ... looking for 10's I'm thinking a better ECM will make it happen. I'm favoring the '7730.

Any and all ideas / thoughts / experiences are welcome,
dave w