ok i already have a gear drive tc i want to put my chain drive from a 90 4cyl behind it using the mc10 adapter . do i need any other MC parts ? ,and i dont see just the mc10 looking for price and availabillity . the trans is a na 4cyl with the geardrive the chain unit is still attached to original trans from 904cyl 4runner that was removed because 5th got noisey . been trying to wrap my head around this for months .