I think there’s an argument to say the slotted set up is stronger as the welded bracket has more contact area. But generally I prefer the threaded bosses as they're less fiddly with no captured nuts to faff about with etc and the good ones have reinforcement in the boss area anyway.
I fitted pea shooters to mine onto the stock headers initially. IIRC the stock headers do cause the peashooters to splay out somewhat, because the stock black caps are ‘kinked’ in and the pea shooters are not. The mounting plates needed tweaking out to suit, all quite doable, especially for a habitual fiddler of your calibre.
FYI when I bought the Legend pipes, Paul needed to know if I was running stock type silencers, or pea shooters, or ray guns as he makes them to suit accordingly and each is different. My T160 pic above is with pea shooters and Legend pipes designed for pea shooters, which tucked them in, making them neater, to my eye at least. The only downside to Paul’s pipes is they cost a small fortune, and there’s nowt wrong with the stock jobs if they’re in good nick (mine got a bit scraped and twisted when I chucked it down the road).
Worth having a look around here and drop ‘em a question if needed:
Silencer
www.triumph-spares.co.uk
