I'm currently looking to fit a 1.7 Zetec SE into my Tiger Avon. However I've been offered a cheap ST24 2.5 V6 engine. What are my gearbox options? What issues will be encountered if any? Help please...

Jag S-Type box

I dont think its that simple. I think you need the jag sump aswell.

They are cheap because there is bugger all you can do with them rwd wise and very few midi's

blacktop or silevrtop engines can be had cheaply the 2 litre giving around 150 bhp as standard