exhaust flange

[Knuckledragger]

i got a ht3b lower turbo. i need a flange that will fit that reduces down to 4" its a tight fit where its at. the engine is in a 79' f250. i had to rework the passenger side floor for clearanc. any ideas?
thanks

 

[tony597fitter]

Can you do short radius 5" elbows and then reduce to 4" under the truck?

 

[Knuckledragger]

im in the process of doing that now. i got a twin kit from pdr and it came with a 5" flange thats about 2" long and an 45* elbow. im going to try cutting an inch and a half off and seeing what that will do. my other problem is the clearance between the frame and bell housing. i boxed the frame so i cant tuck it into the chanel. i can either run 4" or if i can get the bend off the turbo right, i was going to knock in the 5" pipe enough to give it some room.