Measure then primary tube diamter of your block hugger headers with a dial caliper.
if 1 5/8" they can be used for parts to build a custom header
4-2-1 4 into one long tube ,,,step header.
many of the block hugger are only 1 1/2" or 1 3/8" primarys,,,,don;t even bother.
Often a existing 1/5/8 1 3/4 SBC header is a good start point.
Sometimes a nice Real Deal Hooker competition race header ( super stock)
corvette, camaro , 55 chev etc can be bought used and cut up and refabbed.
if you want power you want a powerfull exhaust header and a full exhaust system to match..
SBC in a Celica you will need to fabricate.
its up to you to be creative.. The exhaust system makes or breaks the car. The key word is SYSTEM.
The Exhaust is your scavender/ supercharger on a Hi perf N/A motor. Works with the camshaft,,, valve timing and induction system... And it don;t need to be loud to make power.
1 5/8 o 1- 3/4 is good You can make a rocking header from either.
all the exhaust-header company sell components for fabrication and customization.
find or build a 750-800 DP.
Last edited by F-BIRD'88; 11-20-2012 at 12:16 PM.