For 150 bucks it comes with everything you need to paint your tank and side covers. Its a complete kit. This includes the clear coat. You definitely have to clear coat it. See below this is from the vintagehondapaint.com's FAQ:
QUESTION: WHAT DOES THE KIT CONTAIN EXACTLY ?
ANSWER: YOU GET PRIMER, BASE COAT, CANDY, CLEAR, GUN CLEANER, MIXING CUPS, STIR STICKS, TACK CLOTH, PAINT STRAINERS, COMPLETE STEP BY STEP DIRECTIONS .
I haven't personally used the kit, but plan to very soon. Some folks on here have and with good results. Do a search on the forum or look at the website he has examples of completed paint jobs.