HOOD MEDIA BLASTING

pro media blaster here. i have done a bunch of 70-72 dart/demon hoods. they are actually pretty easy to blast. i wet blast but will not ever wet blast sheet metal. lots of the info out there on wet blasting is false and hyped up by the manufacturer (especially MMLJ) to sell their units. do not wet blast as the wet media will get stuck between the two skins and its just a **** process that people have believed to be a good process because of hype. soda and walnut wont take rust off.
#1 thing that people do not really know about abrasive blasting. there is more than one size of grit. yep, one size does not fit all. most warpage is from unskilled blasters and/or huge coarse media.
most blasters reuse media so your project is getting somebody else's rust paint bondo dirt and undercoating. i never reuse, new media only. I do use soda and walnut but in the last 8 or so years i have almost totally moved away and just gone to recycled glass. 100-200grit. its very fine. leaves a great profile and does not hammer and heat the metal like coarser medias do. good blast angles, good media, the right air pressure and your blaster should have no problems. have them show you what they can do and what medias they use, ask for references (bodyshops) that they blast for and ask to see examples. the biggest thing i learned blasting is when to say no. blasters are normally unskilled, low paid employees who really dont care if they damage your stuff as they aren't paying to replace it.

you have Manus abrasives in Ontario. i would contact them and ask who is a good blaster in your area. they should be able to put you on to a good company. ask them who buys 100-200 grit.

another option is just blast the lower skin and not around the holes, just fingerbang those by hand or with a orby as long as the rust isnt too bad (no rust in ontario)

i have my 71 demon hood that i am going to blast in the next few days for myself. maybe ill post pics of before and after.