I ground back the weld I test fitted the bracket. If I say so myself it worked out very well,
I had to shim the mounting bracket off the engine block by approx 1/8" to get the pulley alignment right.
I also managed to get the plumbing done, the kit comes with both hoses I thought the neatest route between the gearbox and the pump was through the inner wing. I had to use an 1 1/8" hole saw to clear the swaged ends but the end result is quite neat. I'll need to sort out some grommets to put in the holes to protect the hoses.