[Excaliber]

If your not doing 5 or LESS laps on a road course the inboard rears and stock fronts will be fine. After four or five laps, depending on the track, you will have NO BRAKES due to over heating if you go racing. For many people 5 or 6 laps is a LOT, you may be tired out and want to come in anyway (tires over heated, etc.).

Even the big fronts and outboard rears may not cure the HEAT problem. You'll need high temp fluid and high temp pads and brake cooling ducts. Those high temp pads only work when hot, so their dangerous on the street. Being able to change pads easily (or at all) DEMANDS the out board brakes on a Jag IRS suspension.

The reason to go with multiple piston calipers is for better "pedal feel" or "modulation". You can control "impending lockup" and be more sensitive to threshold braking with a mulitple piston disc brake combination. After all, even a single piston caliper can "lock up the brakes". THATS something you DON'T want to do coming into a corner hot! So go with multiple piston calipers if you go racing! If mostly street is the goal, save some money and go stock (and drive within your limits)!

The drag radials offer the SINGLE most important thing a replica needs, TRACTION! But the drag radials aren't gonna cut it in the corners, and THATS where you really need the traction! These cars "spin out" (tail happy) very easily, and good traction is the number one thing that may save your butt when you screw up and hit the throttle to early. Tires, don't try to save ANY money here, step up to the plate and spend as much as you need to get it right. I'm running the old Goodyear "Bill Board" bias ply tires (15") about $170 or so per tire. NOT DOT APPROVED, I don't care, they are about the BEST traction out there (and they look really cool and are period correct). Another choice might be Yokohama "Auto X" tires, these offer good traction even when cold (which is typically when and how you would run an Auto X event). There are a number of good tires out there, some are difficult to find in 15", but that IS the size I would go with. Goodrich T/A's are quite popular and quite "dangerous" in my opinion. They just don't have the traction these cars need!

One more thing about "spin outs". Don't go with a rear gear ratio to low. You WILL have plenty power. A taller gear (3:31 for a Jag would work) will help you control wheel spin easier. Wheel spin is the number one cause of "tail happy" spin outs!

To low a rear gear will actually SLOW DOWN your 1/4 mile ET time due to launching and tire spin problems. Many find that launching in 2nd is quicker! I run a 3:31 with a TALL first gear close ratio top loader. 1st gear is good for about 65 mph, now THATS a TALL GEAR! However, I run the 1/4 in 11.90 seconds, and by ANY standards that is QUICK!