Purely for the satisfaction of doing so, I prefer to install it myself. On the other hand, if you tell me there's much more to the upgrade than meets the eye, then I'd willingly pay a pro.

(After all is said and done, I'm still not sure I know how much of an improvement to actually expect from a speaker retrofit. Is it more effort than it's worth?)

__________________
Eric

1991 560SEL-Euro (214,000 miles)
1989 420SEL (Retired from daily use at 325,000 miles; Use as donor vehicle)