225 slant rebuild for more power

I have a 67 Valiant, things I have done to mine: I installed 2-1/2 inch exhaust from the stock header to the muffler with a "Y" pipe in the front of the muffler and electronic cutout. Doesn't go any faster, but makes a lot of noise, good for parades. From the muffler to the rear bumper a 2-1/4" pipe. I have a 72 engine super six and Transmission, I rebuilt the trans myself and installed a shift kit in it. I installed a 75 "K" member with 75 lower control arms so I could put on a sway bar. I installed .89 dia. torsion bars, in case I ever install a V-8. I installed new gas powered shocks. When I bought the car, the rear fenders were already tubed 3" on each side. I put in a narrowed 8-3/4 rear end with 3.55 sure grip. I have another 3rd member with 2.93 sure grip for highway driving. When I bought the car the person I bought it from had installed 79 Volare disc brakes in front and 79 drums in the rear (10X2-1/2"). it really stops good. I have 15" slotted mags all around even the spare, 4-1/2" right hand bolt pattern. 235X50R15's on the front, 295X50R15's on the rear. There hasn't been anyone so far that can beat me across the intersection, V-6's and V-8's. Very quick off of the line and no tire spin, however when it goes into 2nd gear it chirps the tires. I have high back bucket seats and center arm rest out of a 2000 Dakota. The only 67 Valiant that I know of with 8-way power seat. I installed a electronic FM radio with blue tooth, USB and SD card for music. I have a 74 Duster seat for the rear seat. Just a fun car to drive20191021_113333.jpg