Pan Gasket, Good addition there. I should have mentioned that.
If your trying to achieve a trick or slick look, then get them. I would not recommend them myself. I have not tried them. A little pricey for my pocket just to test. But I think they would look great on a old chop & channeled high boy.
The above pictured cross ram is a part that responded really well to very certain cam shafts. So said the creater of the intake. I would not try and use that intake with a mild grind. Like said above, the Indy Mod Man intake is a slick looking part. Is to that route.
Other 2X4 inline intakes have been long discontinued. The D-66 & the D-64 have been long out of production. I have one myself.