Sweet thats all I wanted was to know they'd fit.. ... Now I got a question about that A.I.R system.. Obviously I cant have it hooked up anything I need to know about complete removal... the actual pump and metal pipes and hoses are off butvi have not ran it yet like this because my motor out as of yesterday but I just bypass it with smaller belt... What about the thing ontop of the intake manifold that a vaccume line runs to? Have no idea what its,called

 

I would have to check if you are referring to the Op's 88 truck for the different part numbers available...we work on all makes and models and will put on (for the most part) anything the customer wants...either that they supply or we source.

I can tell you the ones I put on my 1988 W-150 were the Headman Elite's (79178). Edit: which after a quick look on Summit have the 3/8" flanges

 

Another thing to keep in mind are the air injection holes under the stock exhaust manifold in the exhaust ports that you will need to tap and plug. Most of the time headers will not cover those and if no plugged you will have a leak.

 

Ahh thank you I would not have thought of that.

 

i have flowtech headers, havent put them yet but they were only 200$