Fitting Big Tom Intercoolers - N54s

My brother (Hoosain) and I were fortunate enough to land ourselves a couple of Big Tom Intercoolers.
The IC performs really well from the write ups and tests of other 135/335 owners but requires a fair bit of cutting unneccessary weight
Many guys have fitted it in other countries, mostly doing it themselves.
We don't want to do this cutting and fitting ourselves so we are looking for someone to fit who could do a professional job.
We have already purchased the required piping and clamps.

Any suggestions on who would do this at a reasonable cost with good workmanship and experience. Preferably in the JHB area.
What would the approximate cost be?

Thanks