Not too many drive an A12 nowadays. And $1100 is a lot when you can buy a Toyoda 5-speed for
$400 and adapt it.
That factory 5-speed crossmember is nice
32010-7251P
Road/Rally Option wide-ratioRatios are:
1 - 3.757
2 - 2.374
3 - 1.659
4 - 1.291
5 - 1.000