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If I'm gonna do metal work, I think I'd rather bash the firewall a bit and cut/ weld a tube from the long headers. I didn't know the shorties cost more than the full length did either. For the cost and then haveing to fab on something new, I'll get the full length 1-3/4 tubes. Thanks for the...

I mentioned this in another post, but not directly questioned to you guys. Someone told me I could use 68-72 GTO headers if I bang the firewall a bit. I wanted to see if anyone has used "Hedman 35260" for this combo. I could get cheaper smaller tube headers but since I plan on a lot of racing...

Moog 5610 work GREAT for a 400 Pontiac engine in my 87 Grand Prix! Just wanted to drop a post here in case someone meanders along with the same question. This is the spring number that comes up most of you look for front springs for an 82 GP with the Olds diesel motor. Brad

My GP came with a 350 Chevy and since I have my 400 Pontiac engine in the car now, I need new front springs. Is there any real difference in front weight from a 1978 GP to an 87 GP? The 78 would also have an 80 LB lighter 301 to start with. The heavy duty for the 78 are calling for Moog 5610...

The main reason I would like originals is so that the engine sits low. I have Torker 1 single plane I would like to use. With the TA mounts and rubber mounts all bolted to the block, there is still 2 plus inches between the oil pan and the cross member. I would like to get it lower because I'm...

I have a 1987 GP with t-tops that I have a 1977 400 engine I want to install. All I need to get me started are the motor mounts from a 78-81 GP that had a 301. Do any of you guys have a pair laying around to sell? I tried the firebird steel block mounts and they won't "find holes" in the frame...

I just checked e-bay as I am doing the same swap, nothing turned up. What key words did you use to find the $30. engine brackets? Brad

I have a 1987 GP with t-tops that I have a 1977 400 engine I want to install. All I need to get me started are the motor mounts from a 78-81 GP that had a 301. Do any of you guys have a pair laying around to sell? I tried the firebird steel block mounts and they won't "find holes" in the frame...

I have a 1987 GP with t-tops that I have a 1977 400 engine I want to install. All I need to get me started are the motor mounts from a 78-81 GP that had a 301. Do any of you guys have a pair laying around to sell? I tried the firebird steel block mounts and they won't "find holes" in the frame...