I have a very nice h150f with the 1hz in my 80. Later 80's (and most turbo ones I think) got the h151f. The current 7x series have a h152f. I've never considered it before, but will the h152f bolt up to motors and mount into an 80? I'm aware that the h150f and h151f have a different input spline config so h152f is probably the same as h151f in that regard.