gsl-se intake and housing porting ?
 

am wondering if porting the intake runners and the housings makes much difference on a stock 85 gsl-se. the rotary valves for the secondary runners were stuck and had to be removed. is it possible to make the two holes for the secondary runners into one big port and do the same on the housings to match ports. basicly making the 6 port engine into a 4 port