I'd spend the $$$ on a 1.6L motor long before I spent it on a SPOA.
Jeremiah, you have had lots of excellent advice till this comment. Suspension and engine performance are two different things entirely. This guy is asking about suspension setups, so stay on topic.
When did we get topic nazzis? When I was a noob, I would ask a lot of questions. Often times people would say "don't spend money on X, take a look at Y". I didn't even necessairly know about Y, or know that spening $$$ on Y was better than spending money on X. Decisions about upgrades to a vehicle aren't made in a vacuum. People are on limited budgets, and it sounds like the OP is trying to decide where his money is best spent.... so even though the topic is specifically about suspension, I think I'm well within the general topic of helping a noob think about his options. If you disagree that a 1.6L is money better spent, and believe a SPOA is better $$$ spent - why not talk abou the merrits of SPOA vs 1.6L swap?