360 Head valve spring install questions. Comp cams 995-16.

Hello. I am building a 360. It came from a 1987 3/4 ton d250 truck. Factory 4bbl.
I am planning to install a comp cams K20-224-4 kit. Included are springs 995-16.

According the summits comment section, it sounds like a chore to install the springs.



What is required to install the valve springs onto the cylinder heads?

Do I need a thinner stem seal or is there milling and grinding involved?



What else would be required to allow these heads to use 1.6 rockers later on down the road?

Is there any other spring options that would be easier to install?


Also looking for someone near DFW, Texas to go through the heads and do a valve job if anyone has any shop recommendations, that would be most helpful.

Thanks. Drew.