Temporarily attached muffler pipes to see how to situate it. Reattached radiator with clecos to see how manifold pipes would fit. Decided how to run coolant hoses, after seeingThe Big Picture of how all pipes and hoses will fit.
Attached filler T to radiator flange after drilling holes. Didn't like bolt heads of T chafing against radiator (plastic), so countersunk bolt heads into plastic filler T mounting block.