Made from 1/2" 6061-T6 and sized at 24" x 24", this adapter plate gives you the correct pattern to mount a Lakewood SFI bellhsouing to your SR.
Using that housing will give you more choices of transmissions. This is used in chassis drag cars.
You will have to trim the outside profile to match your chassis.
Also available in 36" x 24" (shown in picture).