IF it is the Pressure Control Sol - GM#10478146 - Sugg. Retail is $58.18 but you would have to consider you will also need 7-8qts of fluid and would be beneficial to replace the tranny filter while its apart. So price could go up accordingly.
The flex plate is one of 2 ways...
L67 Flywheel - GM# 10478146 - Sugg. Retail - $62.99
L36 Flywheel - GM# 12609155 - Sugg. Retail - #63.10
So I would guess $1300 to be pretty high, but most of what your paying for is labor, that can get up there quickly.
But anywho... wheres the GTO???![]()