Lower chain guide question
 

I have P/S pump & bracket, Cruise Control, Alt & valve covers off.
Ready to continue with the chain R&R, but I'm still undecided about the lower guides.

Can the timing cover be removed w/o removing the rad?
How much of a pain in the a** is it?

I already have the parts, and have reasons to doubt how often the PO changed the oil but I'm not sure I want to get deeper than I need to.

Any advice?

Thanks,