yatt: i just inherited a pair of gibson headers

[stev0]

sort of, a friend replaced the headers on his 01 F150 (was dual gibsons) to some full borla kit that he bought. so now what? currently the exhaust on my f150 is

stock headers > stock cats > stock y pipe > magnaflow si/do muffler > dual 2.5" > magnaflow ss 3.5" tips

should i go

gibson headers > magnaflow high flow cat (1 per side) > magnaflow di/do muffler > 2.5" pipe > magna flow ss 3.5" tips
or
gibson headers > magnaflow high flow cat (1 per side) > magnaflow high flow y > current muffler/pipe/tips

i guess the question is, is there going to be a noticible difference with the di/do muffler compared to a high flow y and si/do muffler?

 

[notfred]

What motor is in it, 4.6?

 

[stev0]

Originally posted by: notfred
What motor is in it, 4.6?

5.4

edit: 4.6? puhlease