exaust gaskets and other buying questions

[Sam Snow <snowsam@mail.auburn.edu>]

I'm looking at a 74.5 that some sore of blown gasket around the exaust
header -> pipe connection (I think). 

How hard and or expensive would this be to fix? 

====
Another question--

This was only the 2nd mgb that I've driven. The brake system just got new
wheel clys and a new master cyl. Compared to my Volvo the brakes aren't
that great... and compared to our ould '52 army jeep they are a toss up...
but maybe a litte worse. 

Is this normal? 

thanks, 
Sam