muffler help please

[Motor City GMC]

I have a 79 K30, 400 sb....puting headers on 2 1/2 pipes and looking at flowmaster super 40 or 44's.
My question is should i buy mufflers that have no offset, ones with a inlet offset or ones with a outlet offset? What is best?
Also any opinions on which muffler sounds better the 44's or 40's....i want a nice wojnding idle but not something thats gonna drive me crazy after/during a 3 hour drive

[324matt]

I got thrush mufflers from summit. 2 for 100 bucks. Same exact as fm 4o series. I like them. Nice tone not loud for long drives. Get the offset exit ones. Mine are middle inlet, offset exit. I have them dump at the rear axle.

[Jeramy]

Originally Posted by 324matt

I got thrush mufflers from summit. 2 for 100 bucks. Same exact as fm 4o series. I like them. Nice tone not loud for long drives. Get the offset exit ones. Mine are middle inlet, offset exit. I have them dump at the rear axle.

ive got the same thing but offset inlet center outlet and turned out sides in front of rear tires

part number 17656 33 bucks a piece on summit

edited to say they are LOUD, at least more than i was expecting out of a 2 chamber but it grows on you fast

[Motor City GMC]

Thanks guys, i ended up going with Flowmaster Super 44's...offset inlet (because i wanted to keep the pipes as close to the frame as possible) and center outlet