welcome aboard
You seem to have a good starting point with your 1302. What color are you planning on going? Your engine size you want is a pretty good choice with dual carbs. I run a 1776cc on my 73 super convertible as a daily driver and its does great.
The spoiler was actually bought in a group by that some of us @ SUPERBEETLESONLY.com did a couple times. We ordered them through a company that sells KAMEI body parts but since the part was no longer in production we had to organize a certain amount of people to do a special pressing of the spoilers @ the Kamei plant in Germany. If you dont want to wait for another group buy to come around call Jon @ TOPLINE in Anaheim, California because he has a couple available from the last group buy. Heres his #(714)630-8371. I'd call as soon as possible cause he only has a few and I know they wont last long.
See ya around