Check out www.customcowlings.com I had my 496s in the Fountain blinged out with there stuff and it looked good. No need to remove to add or change oil. Its a little extra work to keep clean but anything that looks good is.

The boat bling covers are fantastic! A much nicer piece of hardware than the cutom cowlings IMHO. I am very happy with mine.

As far as having access to the fluid fills such. It's not a big deal. It's 3 allen head screws which take all of 30 seconds to remove...

I don't have 496's, but from what I have seen, the boat bling cowlings look great. Patrick from boat bling has some of the best customer service out there, and I think that I've seen custom cowlings from boat bling before.

Boat bling also makes some great cleaning products!!