203 is a good bolt-in torque cam for otherwise stock 88 inch motors. If you're not going to do any other motor work, it's probably the best cam to use. You're not going to see any huge numbers with those cams, but will give you good bang for the buck.
I put SE 203s in my 05 FLHT, when we went to replace the cam tensioners, we found the cams had a wear spot, so for the couple extra bucks I replaced em with the 203s instead of stock. Like I said, they weren't much more than stock replacements cost wise. I have an 05 FLHT with a ness big sucker and Rinehart TD's. Is it better than stock, oh yeah. Will it go freaky faster than before, not really. It's a carb model, so I don't know if that matters. Like I said, it's a lot better, but not an enormous difference.