That is a very nice motor. If it was me however, I'd change a few things over, so I might give you some ideas or you might be totally against them! Totally down to personal opinion
1) Remove and sell the front wrap around bull bar but keep the spots
2) Remove and sell the front bumper
3) Fit a Heavy Duty front bumper and mount spots to it
4) Spray front headlight surrounds / grill black or replace them with black ones
5) Fit a roof light bar with lights wired into full beam
6) Blackout back windows
7) Remove front mud flaps so it gets mud on it!!!
it looks stunning as it is! I just always go for the heavy duty, robust do anything vehicle look!
The wheels, tyres, body work and the interior all look pristine.
When it comes to undersealing it, the best thing you can do is take your time and do a good job. If you have access to a pit or ramps they'll be a big help. Steam it underneath if possible, if not scrape all the loose crap off and then pressure wash it. YOU'LL NEED OVERALLS! It might also be worth your while getting a shower cap, a mask and some white spirit to rub yourself down with afterwards (it gets underseal off a treat). Best way to apply it is with a garden plant / flower sprayer, the manual pump type thing that costs about £7 from your local garden centre. Fill it with a waxoyl and white spirit mix or oil or whatever you are going to treat it with and then sit the whole thing in a bucket of hot water to keep it runny. It'll go on well and you'll be proud of the job for months and months until it needs doing again in two or three years time
-Pos