The wires will be "trapped" until they turn the corners to the sides of the engine. At that point, a 4-wire separator, and two 2-wire separators should be adequate for each side. That assumes you are not using the stock metal bracket/cover on the drivers side that holds the wire for #7 againast the head. If the wires have been changed previsouly, that cover often gets discarded, because it is difficult (but not impossible) to reinstall.
Courtesy of Shoebox:
On my engine (bought the car new) the wire for #7 was tucked under the exhaust manifold with the cover, and did not wrap around the manifold as shown in the cut, above, from the factory manual.
94 Formula A3+1: 381ci all-forged stroker - Callies Stealth, Oliver 5.85 billet rods, BME nitrous pistons / CNC LT4 heads / Comp Cams custom solid roller / TH400+GearVendors OD/4.11's / Strange 12-bolt / 300-shot N2O / Spohn Suspension / 6-pt roll bar with integrated SFC's / full AutoMeter instrumentation / MoTeC M48 Pro engine management system / a few other odds 'n ends. 800HP/800LB-FT at the flywheel.