1) Does anyone know the available length of adapter/bellhousing spacing from ZF (BMW) front flange to FE rear engine flange when the ZF input shaft is seated in the FE crank bearing....or for you Windsor guys if you know your bellhousing length diminsion I can adjust for the FE (the Windsor crank flange sits proud of the block by .25 and the FE sits proud by .67 so an additional .42" bellhousing is needed for an FE so...if I knew the Windsor belhousing length I could add .42 and would know the length needed for the FE..2)Also what thickness engine plate would be appropriate ( I need to fab one for the FE to adapter).....3)One more question should I have top or top and bottom access holes and cover plates in the bellhousing and any special way to bolt the ZF to the adapter??? Thanks! Steve