$1500 I would consider. But the price on bowlers web site is $5995 for that trans and the magnum is $3K. So it’s $3K more. Unless I am missing something. Ratio wise that trans with a 3.89 gear is pretty similar to a magnum close ratio with a 3.50 or 3.70 gear. Main difference is 4th isn’t as tall which is a pretty nice gear. For my engine and tire size that Brings top speed in 4th to 130 with your setup and 140 for the 3.5 gear and 3.7 is 135.