Do you feel comfortable in doing this? When the system is right, it's dependable and a lot of fun. But it 's not for the faint or weak hearted. Backfire is as possible as a normally aspirated engine. If the thing backfires after you put the turbo on and it didn't before, it's not the turbo's fault. Too lean of fuel curve or a small problem that existed before you did the install is causing it. Weak valve springs or burned valve or misfiring plug and so on. Blow through systems work well when monitored and set with the right pressure sensitive fuel regulators. And these things need tuning to keep the carb from from making your day a bad one. Debris with these set-ups can dislodge and plug emulsion ports, boosters can creat a pressure problem and the carbs themselves require a rework to make it durable. Draw through set-ups are easier to tune and less complicated for the novice turbo kind of builder. Camshaft and compression decisions are a major player if you plan on some decent horsepower. What are your intentions and do you have a system picked out? Feed us some more info and let's steer you in a good direction.