hey all. i have 1 901/13 (serial: 7195609) transaxle im thinking of rebuilding. i picked it up years back to use on a build i started. my question is, are all 901 5 speeds doglegs? if not, how can i tell if my box is or not? also it's going in a 67 911 normale with a stock 2.0. it's got a 4spd in it now but i always wanted to stick a 5 spd in it for better freeway driving. i heard thru the inter webs that this 901/13 has the same final drive ratio as the 4spd i have now. is this true?