Need tool recommendation for valve spring change with heads on (360)

I'm doing a valve spring upgrade on a 360 with the heads on the engine and I need some advice on what tools I will need to do the swap and the best place to purchase them. Thanks in advance.
Hey, I make valve spring compressors for the 426 hemi. Go to YouTube and text in valve spring compressor 426 hemi. I can make you a valve spring compressor. Satisfaction guaranteed. $195+freight.