So I pulled (or dropped) the motor transaxle this weekend and forgot to measure for my new engine shelf. No offense to the suppliers that repop the parts but at $175 for the right side engine shelf i think i will make my own.

Mine was toast actually almost missing so I need someone to give me some general dimensions so when i put the motor back in my tin will fit around it.

Are you planning to install the rubber seals?
If so I would really recommend buying the shelf because that groove will be very difficult to replicate. Call GPR and see how much he sells the shelves for.