thanks everyone, i made some calls to crs to put a supra 5 speed in they sell a kit with speedo cable crossmember fork, clutch rubber mount bellhousing ect ect everything needed apart from the peddle box and the actual gearbox the cost of the kit is $1550 if you are running a trimatic they sell the yoke so you dont need to alter your tailshaft at all and the supra box can be hydraulic or cable depending on what model you buy and they sell a kit for either,,i only wanted to do it for the overdrive i also looked at running a turbo 700 but then i need to either re drill the block to a turbo pattern or run an crs tri/turbo plate then change the tailshaft rear half vh front half changed to suite and then i would probably get the box manualised so i dont need to run the throttle valve cable and dont need a switch to activate the top gear lock up,,but due to the cost of either conversion i will just have to change my diff gears to 3.08 for the moment till i make up my mind and have the spare cash to change the car