Thanks. However, I thought I might tap the block for external lines but was worried about stressing the block with tapered fittings. Am I being over cautious there? It's just a street strip 6000 rpm deal. With the car being rhd the oil filter is in the way of the steering linkages/box. The method chrysler used (steel lines and a huge block fitting) is rubbish (garbage), they leak like a ruptured oil tanker and you can't buy spares for them anywhere. Nobody do any lock nuts for these rockers? I'm just unsure about them, I had a similar set up on a F**d Capri (cologne engine) solid lifters but they kept coming loose  Thanks again. 
'74 Challenger..9.46 @ 145.9 1/4, 6.001 @ 118 1/8 so far. 4023lb !!! # N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials.
9.51 @ 142.4 1/4, 6.003 @ 114 1/8 with our old mule KB, 572-13, 580 wedge.
RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03
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