A bit fiddly... but not particularly difficult.
The biggest problem is access... if you have all the whistles and bells, it can be difficult enough getting a ratchet in to undo the bolts let alone yor whacking great fist in to position the new gasket.
Then of course you have to line the bolt up with the three holes in the manifold, gasket & block.
Finally... you've gotta get the ratchet back on.
As I say, it's not particularly technical but it will require a well stocked pocket of change if you are within hearing distance of a swear box!
Good luck!
P.S. Remember to put the gasket in the right way round! Ask me why I know! :oops:
Skibum