Are those Headman headers set up for 4 speed? if they are do you have the part number . I had it but i lost it .I won't get into the later model mustang stuff, but I will talk about the 302. Is you car a V8 car or a 6cyl? I put an ATK 302 roller cam 302 into my car and just transferred all of the 289 accessories over to it. If you go with ATK, like no1hedberg said, you want the front sump model. it is the ATK 300HP 302ci HP79
I used a Weiand Stealth 8020 intake, Hedman longtube headers, and a Holley 4160 1850 600CFM carb in the car. I just basically dropped the engine right in, however, I mentioned before than my car was originally a 289-4V car.
Here is the engine after it was painted "old Ford Blue"
Here is another shot of it in the car....
Yeah i always blast them and use high temp BBQ paint .you have to break it in ,warm them up by running a few minutes then shut it down and let them cool ,do it a couple of times and it will last along timeMine are Hedman 88300 long-tube headers. I believe they are for the C4 and not the manual transmission.
I believe the Flowtech (Holley) headers fit with the manual transmission, but I didn't look too deep into that since I have the C4.
I'm not sure about the Flowtech headers, but the painted Hedman headers are just for shipping protection. It isn't high-temp paint, so I used POR-20 high temp coating to coat my headers with. I've also heard of people having good luck with high-temp BBQ paint and other 1200*+ aerosol paints.
*I just use Summit as reference, since with Summit and Jegs it is so easy to find the parts. I have and do purchase parts from there but there are plenty of distributors out there to get your parts from. </disclaimer> lol