This will be a 168% upscale using a BT-60 for the main body and the SEMROC Series 18 (1.84" O.D.) body tube for the turbos.

Let's start with the hardest part first, the nose cone.

You will need an Este PNC-60AH. This is the Mean Machine/Der Red Max nose cone. Pic #1 shows the nose cone with an original Viper cone.

I used a pattern I made in CAD for a cutting guide.

There are cross marks on the pattern that you will line up with the nose cone seam.

Cut out the center of the pattern. Measure along the seam of the nose cone 3.7" from the shoulder on one side and 2.9" on the other side.

Insert the nose cone into the patern, align the top and bottom dimension line with the marks on the pattern sheet, and mark the cone. Pic #2 Be sure the two side marks on the pattern are the same distance from the nose cone shoulder.

I used a Sharpe in the picture just so the line would show up better in pic #3.

Attached Thumbnails

     

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