Inline-pro is a little pricey but they will warrenty the install just as long as you get the motor from them as well. If you get the motor yourself, say from EBAY then when they do the install & something goes wrong when they crank it up they will have a hard time to argue w/ the motor company. They get the majority of there engines from NOYAN down in manassas (they're a legit motor company).
Go w/ the B18 don't mess w/ the H22 I don't even think Inline-pro will install it for you anyway. To much customing & fabricating to get the motor in there. Also if you end up getting more parts for your engine/car & you get them from Inline-pro, I'm sure they'll give you a little discount that's if you do the swap with them.
John (owner) & Stan (manager) are great guys, that's why inline has been in the business for a while, why they have a turbo charged s2k (stock internals, only a headgasket) that does 10.5 sec's in the 1/4, & why my boy's s2k will be the fastest street driven all-motor s2k in the nation (hitting the streets end of May).

 

P&C Racing in Manassas..... right down the street from NoYan's