Pinto vs CVH

[jps]

I'm slowly learning (i think) and am happy that I can get a Sierra donor. But a pinto engine seems a bigger ask - it looks like I might end up with a CVH engined one. Will that matter much in terms of a 'book' build? Will it still fit under the bonnet OK? Will it likely still come with a type 9 box in the donor?

The book suggests CVH isn't as good a choice as a pinto - but from reading the forum it looks like a fair few people have them?