Any ideas whats better?
a set of hif twins or hs twins?

I hav been offered a set of hif 1 1/2 inch twins to swap for my 1 3/4 inch twins.
I hav a set of 1 1/2 inch hs twins already.

So what would you use n y?

I think the hif twins look tidy when on the car but is the perfomance?

Cheers for your Help

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61 van
63 countryman
63 saloon
67 auto
73 auto clubman
75 1000cc clubman
77 sccr 998 clubman
NZ 79 1275gt clubman estate
79 LE
80 meanee
Racecar
Fiat 500