Re: 5 Speed Conversion
You should have an 8.8 rear already. The ratio might be 3.08 with the 4R70W trany.
Most guy's install the M5r2 that comes with the Super Coupes.
1990 Thunderbird Factory stock Circle Track Car #12
351W C4 3.90 open gear.
See my car at:www.tessier-racing.com