I think most guys with 40s will suggest you go with something more well suited for a FJ40 environment like the FT2900. While I really like my FT8800 I don't think I'd consider putting on in a 40. You want something probably a little more rugged unless you have a really good protected place to put the main radio unit and a fairly protected spot for the face plate.
Jeff Z. (the "not quite as skinny" one)
'97 FZJ80 Antique Sage AE #267, stock
12/74 FJ40, 2F, SM420, 4" Lift, ARBs, 33" MTRs
"...anything else i can do for you guys, how about i wash your car or mow your lawn while you figure out your firewall system? I am now boarderline insane/unibomber." Kipper
"That assumes I'm even capable of pulling and stabbing..." Jacket
"I really like having a detachable unit." Beater