We are doing a 59L block with a T5 now using a Cornhusker adapter. Your concern regarding the stability with such a small spread is warranted and we are trying to address the issue. We have added some steady-type rods to help the rocking. I will see if I can find a picture. The T5 we have is the really late S10 with the Ford mounting face pattern. The car should be running by Christmas or rocking by Christmas, depending upon the motor mount findings.