Whilst fitting the 182 4-2-1....

[Grandpa Joe]

Is there anything else I can do at the same time to save time and money?

I've got the following parts to fit.

Shocks + springs
Wishbones
Steering rack bushes
Front ARB and bushes

 

[Rob669]

Do you mean when the manifold is off?

You'll gain better access to the steering rack bushes. I'd probably change the tie rods, too.