well exactly. i use the dakota bellhousing with the ma5 trans from a solstace/ colorado. its a five speed that will bolt up like the r154 supra trans. good for up to 700 hp. they are plentiful and can be had for around $275.00 to $350.00 where these days an r154 is around $1500.00 or better, and becoming more scarce. i apologize for misunderstanding. for me the extra gear of a 5 speed is appreciated especially for the price. it doesn't get me into a sixspeed which would cost $3500.00 or more for one more gear