--Fits for most hot rods and classics engines including gm (chevy, gmc, olds, cadillac, pontiac, buick, ford, & mopar (chrysler, dodge, plymouth)--Designed for 265 283 305 307 327 350 383 400 396 402 427 454 472 502 260 289 302 351w 347 352 360 390 406 427 428 429 460 351c 351m 400m 273 318 340 360 361 383 400 413 426w 440 455 330 326 engines--9.5mm universal red plug wires--Set of 8 plus a coil wire if using on non hei distributor--Wire lengths are as follows: coil wire = 36", 2 wires = 53", 2 wires = 46", 2 wires = 38", 2 wires = 33"--There is plenty of length of wire to do almost any engine, we just finished a blown big block chevy with these wires & had to cut every wire at least 9 1/2"--These come complete with the ends and boots for male or female distributor caps. these can be used on hei and electronic or points type smaller cap distributors (including original distributors with male or female cap)--These feature rfi suppression so there will not be any radio interference with these wires like so many others out there!--Spiral wound steel alloy conductor lowers the voltage resistance to 500 ohms per foot