alright I'm lookin at buyin a 79 evinrude 75hp motor. i'm gonna swap the 49ci powerhead for a 56ci motor. what I wanna do is build an internal tilt and trim for it. don't know how to do it with that style swivel bracket. can't use external, too slow, and can't use thru transom tilt and trim. wondering if anyone knew how to do this. heard it can be done with 2cyl tnt unit or a yamaha tnt unit. willin to make it a yamarude if it needs to be done but wondering if anyone knew how to do this and if anyone had the parts nescessary to do this. thanks.