ok I have a set of dynomax headers part #85098 they are the blackjack shorties, they have 1 1/2 primary`s and 2 1/2 collectors that neck down to 2 1/4 flanges. I am aware that i will have to have either my factory Y-pipe modified or a custom one made.
My car has the 3 inch slip fit cat(gutted) and a 3 inch dynomax catback, with dual 2 1/2 tailpipes. I know these headers are not the best money can buy, but i got them for $50 brand new.

Heres what i want to know:
1.Has anyone used these headers and had any problems with them?

2.how well do they fit?

3.Will these be adequate for the car in my sig?

4.Can the stock Y-pipe be modified, or is a completely custom one innevitable?

sorry so long.. any info will be greatly appreciated.

thanks

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87 IROC-z 305 TPI
Borg Warner T-5 fresh rebuild
10-bolt 3.73 Richmond gears rebuilt GM posi,
formerly BW 9-bolt w/3.45 gears(broke it)
Ported Plenum and Runners Homemade AFPR
ACCEL 8.8 wires, High output coil,and cap & rotor
Bosch platinum + 4 plugs
Ram Air w/ K&N filters,
MAF sensor screens removed, TB coolant bypass
Polyurethane tranny and torque arm mounts
Gutted Cat, Dynomax catback w/custom tips
K&N oil filter,Mobil 1 synth,Factory Oil Cooler, Futura GLS Super Sport tires 265/50/15 rear and 235/60/15 front mounted on 86 monte carlo SS rims ,

400 sbc and a 6 spd in the works

 

btt

------------------
87 IROC-z 305 TPI
Borg Warner T-5 fresh rebuild
10-bolt 3.73 Richmond gears rebuilt GM posi,
formerly BW 9-bolt w/3.45 gears(broke it)
Ported Plenum and Runners Homemade AFPR
ACCEL 8.8 wires, High output coil,and cap & rotor
Bosch platinum + 4 plugs
Ram Air w/ K&N filters,
MAF sensor screens removed, TB coolant bypass
Polyurethane tranny and torque arm mounts
Gutted Cat, Dynomax Headers & catback w/custom tips
K&N oil filter,Mobil 1 synth,Factory Oil Cooler, Futura GLS Super Sport tires 265/50/15 rear and 235/60/15 front mounted on 86 monte carlo SS rims.

406 siamesed TPI in progress