Have a friend that just bought a 89 GT. It appears the previous owner(s) had taken the stock plenum off and cut it in half. (We're guessing that this was to port it.) And then welded it back together. Is this an old school mod or what?
Why would somebody go through the trouble when there are high(er) performance plenums on the market? I'm mechanically challenged and poor, so that's a pretty ballsy move in my book.
The welds aren't horrible, but it's definitely noticeable. They also painted the entire plenum black which has chipped off in several places. Could have been a little more effort in the finishing touches I think. But it has a nice cam thump to the sound and he says it runs good so, hey, who am I to say.
As stated above it is still done today, but it was mainly an old school mod from before there was a lot of aftermarket support for the 5.0 and a lot of good intake manifolds.
Tim