I have to remove the mufflers to adjust the chain on my 96 Adventurer. The first time I almost gave up trying to get them off the header pipes. Then my son suggested I spray WD-40 in and around the joints where the muffers meet the pipes. Now I soak them, let them sit for 5 or 10 minutes then just wiggle them off. Works like a charm.
Interesting about the Sportster pipes. Harleys have 1 3/4" pipes and our Triumphs have 1 1/2" pipes (at least mine does). One would have to use an adapter to make the mufflers fit.
I've entertained the idea of a center stand myself but haven't found a situation where I really thought it was necessary...yet.
Also, British-USA in South Houston, TX probably has off-road pipes for your bike. Their web address is
www.british-usa.com. Check 'em out