RHS head valve train??

Hi Guys,
I am looking for helpful information on good rockers for these heads. I have a set of 1.6 ratio PRW rockers. There seems to be a big problem with clearances. I talked to one fellow and he said almost all the RHS heads are going to create the need to dremel clearance on the rocker gear. I will enclose pix of the heads. I do not have the shafts bolted down, but there would be clearance issues regardless. Will the clearancing weaken the durability of these rockers? These are the 205 valve RHS heads with slight porting. Not sure of the spring diameter size, just that I can go up to a 580- 590 lift cam profile. Are there better rockers out there with better clearance for street/strip?
Also, I have heard the need for special head stud kits, Who has them on here.? This will be for a small 340 stroker.