HKS Exhaust fitment

[Grimson]

I want to change the stock exhaust for an HKS Hi Power and keep the stock prodrive downpipe.

From what I read the WR1 is a JAP export and I am a little confused as to which system will fit.

Would either of these fit?
http://www.temple-tuning.co.uk/hks-hi-p ... -897-p.asp
http://www.temple-tuning.co.uk/hks-hi-p ... -889-p.asp

If the second one that says UK cars require different downpipe, does that still count since the WR1 has the Prodrive one?

Thanks for help !

[Grimson]

If not the HKS Hi Power, can someone advice me what exhaust system will fit the car and bolt onto the Prodrive downpipe?

I am told the Prodrive downpipe is shorter than stock so only their exhaust system will fit. I don't want to buy a new downpipe though.

Please give me some options.