where u located dude?

if its anywhere in the midlands, as for media blasting i can recommend a place in covnetry called marawise, they do plenty of shells iv noticed, and im told work at a competitive rate, they did the blasting on the discovery channel 'beetle crisis' car

if its dipping u want, then theres a place in gornal in the black country (i forget the name sorry ) they are pretty much regarded as 1 of the best, they also did work for the discovery channel 'campervan crisis' show, and have been featured in a few issues of various ford and classic car mags. my old company had a unit in the same industrial estate, and i watched many a project car come in for dipping, from mk1 escorts, to porsches etc

id say media blasting was the much cheaper option, but if controlled correctly, the acid dip will eat rust absolutely everywhere, especially where blastings cnt get to