I have cracked laft hand manifold too. It was already welded once by previous owners. Only problem is that here in NZ they are $417 new. The local wrecker sold me a 2nd hand one off a VT but I took it to an engineer who found a crack just starting under fancy light, so I got my $250 back. As it's a Calais the standard extractors won't fit due to Progressive Steering system. The extractors that will fit will cost me $850 fitted (+ heat wrap @ $50)... which in my book is too much.
Any ideas anybody???