I think the heads will be fine assuming no broken or worn parts. Shouldn't be with only 3,000 miles, but check carefully all the same. Your intake choices are limited, but Edelbrock makes a magnum version of the Air Gap which should suit your needs pretty well. If the seller has a good intake to go with the heads all the better. I think you can safely use more cam. Assuming an automatic transmission you can usually go up to about 230* at .050 before the converter becomes a major issue. I only have a .030 360 and I am using a Comp. 284 XE flat tappet hyd. with 240* [ intake ] and I have no shortage of low end torque so your stroker shouldn't have any problem with more duration. Of course with a manual transmission stall speed isn't an issue, anything from idle to redline. Good luck with your project.