Fuel Swirl Pot Question

I'm having problems with my 87 cabby where it cuts out under load, and was wondering if the 1.8 carb models have swirl pots, and whether it would be worth replacing?
Also, if anyone knows the size of the main fuel line from tank to engine bay, I'd like to replace that too. Cheers! 

Yea the carb engines have a swirl pot attach using the 2 centre rocker cover bolts.

I'd also have a look on your fuel tank and clean or replace that filter as well

What carb do you have, original carb or a Webber?