...want to put less curvy bars on it though...a straighter bar perhaps which will give me more of a lean forward position...
Hi Scott,
the bars in your photo look like the Special's stock rototillers and IMHO their only good use is as part of an outdoor windchime.
Bars is like shoes, you gotta try them on before you know that they'll fit you.
Stock bars from an XS650 Standard are lower and straighter and Eurobars are lower and straighter yet.
FWIW my "best fit" bars for riding an XS650 solo are from a 1972 Suzuki GT750.
The different stance the XS650 needs for sidecar work means that XS11 Standard bars are better.
What I'd do is find a motorcycle swapmeet, I've never been to one that didn't have a table full of 'bars for sale, usually ~$20 each for bars with nice chrome.
Try before you buy.
The 1" Harley bars are easy to see but take a caliper to measure the 7/8" bars.
Some of them ain't.
They are 22mm BMW bars (7/8" = 22.22mm) and that small difference means that everything meant to fit on 7/8" bars tends to slip around on them.
And yeah, you could shim the 22mm bars with strips cut from a beercan but why bother?